Brushless DC gear motors are DC motors that use magnets instead of brushes and a commutator for commutation. The benefit to that is they don`t suffer from brush wear, but the drawback is that they need electronic current-phase commutation.
Brushless DC gear motors work like shunt-wound motors, but field flux comes from magnets instead of current through a winding. The permanent magnets are made of rare-earth elements such as high-energy neodymium that generate a magnetic field.
